This is a sub-page of Call of Duty: Modern Warfare 3.
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This needs some investigation. |
AT4#
A cut rocket launcher first seen in an E3 gameplay video for "Black Tuesday". Has a pickup icon and Create-a-Class image.
AK74u#
Used in the campaign, but has an unused Create-a-Class icon for multiplayer.

AUG HBAR#
Has a killfeed icon that appears to be taken straight from Modern Warfare 2. It is possible to have the AUG model equipped over the juggernaut version of the M60 by applying a camo to it.
Watch on YouTube
F2000#
Its Modern Warfare 2 Create-a-Class icon is present. The gun is used for an unused killstreak as a Target Laser. 
Intervention#
Create-a-Class icon from Modern Warfare 2 remains.
Lee-Enfield#
Strangely enough the Lee-Enfield's HUD icon from Call of Duty 2 is in the game's files.
M9#
Unused weapon from MW2. The weapon is obtainable in the mission, "Goalpost" but is extremely rare to obtain through normal gameplay. Its Create-a-Class icon from Modern Warfare 2 is also present in the game's files.
M21 EBR#
The M21 EBR has an unused Create-a-Class icon (from Modern Warfare 2), texture sheet, and bump map. All the images are named "iw5" meaning they were created for the MW3 Engine.

M40A3#
The Create-a-Class icon from Call of Duty 4 is in the game.
M93 Raffica#
Its Create-a-Class icon is in the game's files. The weapon's Create-a-Class slot is still present, but the weapon files are not.
M240#
Used by Makarov's terrorist in a flashback of the mission "No Russian" but has an unused texture sheet and bump map and was seen in early screenshots. It is used in the Wii version during Goalpost for some reason.

M249 SAW#
Like most cut weapons it has its Create-a-Class icon (from Call of Duty 4) remaining.
M1014#
It appears that the M1014 was supposed to make an appearance in Call of Duty: Modern Warfare 3, as the pickup icon, Create-a-Class icon from Call of Duty 4, and game files remain (unchanged from its Call of Duty: Modern Warfare 2 appearance though). It was probably cut in the late stages of the game's development.
M1911#
While it appears throughout the campaign, albeit in an unusable form, is has an unused Create-a-Class icon from Call of Duty 4 and a Create-a-Class icon with a silencer on it.
MG42#
HUD icon from Call of Duty 1 and 2 remains. Throughout the series, this icon has been used as a placeholder icon for stationary machine guns.
MK12-SPR#
A M4A1 with a RSASS scope and bipod, likely intended for the mission "Eye of the Storm", where an actual RSASS appears. This also may have been used in Multiplayer on the removed Heli Sniper killstreak.
MP44#
Its Create-a-Class icon and HUD icon from Call of Duty 4 can be found.
PP2000#
Has a Create-a-Class icon and a bump map.

R700#
Has a Create-a-Class icon.
Ranger#
Only a Create-a-Class icon remains.
RPD#
All that remains is a HUD icon. Likely replaced by the PKP Pecheneg.
TAR-21#
Create-a-Class icon, a texture sheet, and a bump map can be found.

TMP#
The TMP Create-a-Class icon from Modern Warfare 2 can be found and is named "mp9_v2". The filename for the TMP in Modern Warfare 2 is "MP9".
Vector#
Could be seen in some trailers. All that remains in the game is a texture sheet and a bump map.

WA2000#
Only a texture sheet for the scope and its bump map remain.

Mini Uzi#
Has unused textures and a Create-a-Class image that is the same as the PM-9.
(Source: Call of Duty Wiki (Mini Uzi))
Weapons With Leftovers From Previous Games#